About 500 million euros of the investment will be used to develop variants of the Mission E battery-powered sports car, which debuts next year, Porsche said without giving details of the variants.

The Mission E is expected to be sold with a range of performance versions. Porsche development chief Michael Steiner said last November that the production Mission E might be offered with different electric ranges so customers looking for a sportier dimension could avoid a dramatically heavy drive, and instead stop more frequently to recharge.

Porsche also will invest 1 billion euros for the electrification and hybridization of its existing product range. Porsche recently said decisions to position a plug-in hybrid version of the Panamera sedan as its top-of-the-line version, in combination with a longer electric range, has been a success. Around 60 percent of all new Panameras sold in Europe were equipped with this hybrid powertrain, which hit markets in June.

Porsche is Volkswagen Group's most profitable brand by earnings margin but its investments in greener cars are weighing heavily. In an interview with Automotive News Europe published in November, finance chief Lutz Meschke characterized its investment plan, which was half as ambitious at that time, as an "enormous burden."